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authorLinus Torvalds <torvalds@linux-foundation.org>2024-05-17 18:53:47 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-05-17 18:53:47 +0300
commit4853f1f6ace32c68a04287353e428c4cfc3fa8ed (patch)
tree15bf600ce002c8aca583d9525dfd8241447987e0 /arch/arm/mm/cache-nop.S
parentea5f6ad9ad9645733b72ab53a98e719b460d36a6 (diff)
parentf698d314eec2e16b980128b503d96bd73df77e90 (diff)
downloadlinux-4853f1f6ace32c68a04287353e428c4cfc3fa8ed.tar.xz
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux
Pull ARM updates from Russell King: - Updates to AMBA bus subsystem to drop .owner struct device_driver initialisations, moving that to code instead. - Add LPAE privileged-access-never support - Add support for Clang CFI - clkdev: report over-sized device or connection strings * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux: (36 commits) ARM: 9398/1: Fix userspace enter on LPAE with CC_OPTIMIZE_FOR_SIZE=y clkdev: report over-sized strings when creating clkdev entries ARM: 9393/1: mm: Use conditionals for CFI branches ARM: 9392/2: Support CLANG CFI ARM: 9391/2: hw_breakpoint: Handle CFI breakpoints ARM: 9390/2: lib: Annotate loop delay instructions for CFI ARM: 9389/2: mm: Define prototypes for all per-processor calls ARM: 9388/2: mm: Type-annotate all per-processor assembly routines ARM: 9387/2: mm: Rewrite cacheflush vtables in CFI safe C ARM: 9386/2: mm: Use symbol alias for cache functions ARM: 9385/2: mm: Type-annotate all cache assembly routines ARM: 9384/2: mm: Make tlbflush routines CFI safe ARM: 9382/1: ftrace: Define ftrace_stub_graph ARM: 9358/2: Implement PAN for LPAE by TTBR0 page table walks disablement ARM: 9357/2: Reduce the number of #ifdef CONFIG_CPU_SW_DOMAIN_PAN ARM: 9356/2: Move asm statements accessing TTBCR into C functions ARM: 9355/2: Add TTBCR_* definitions to pgtable-3level-hwdef.h ARM: 9379/1: coresight: tpda: drop owner assignment ARM: 9378/1: coresight: etm4x: drop owner assignment ARM: 9377/1: hwrng: nomadik: drop owner assignment ...
Diffstat (limited to 'arch/arm/mm/cache-nop.S')
-rw-r--r--arch/arm/mm/cache-nop.S61
1 files changed, 33 insertions, 28 deletions
diff --git a/arch/arm/mm/cache-nop.S b/arch/arm/mm/cache-nop.S
index 72d939ef8798..f68dde2014ee 100644
--- a/arch/arm/mm/cache-nop.S
+++ b/arch/arm/mm/cache-nop.S
@@ -1,47 +1,52 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <linux/linkage.h>
#include <linux/init.h>
+#include <linux/cfi_types.h>
#include <asm/assembler.h>
#include "proc-macros.S"
-ENTRY(nop_flush_icache_all)
+/*
+ * These are all open-coded instead of aliased, to make clear
+ * what is going on here: all functions are stubbed out.
+ */
+SYM_TYPED_FUNC_START(nop_flush_icache_all)
ret lr
-ENDPROC(nop_flush_icache_all)
+SYM_FUNC_END(nop_flush_icache_all)
- .globl nop_flush_kern_cache_all
- .equ nop_flush_kern_cache_all, nop_flush_icache_all
-
- .globl nop_flush_kern_cache_louis
- .equ nop_flush_kern_cache_louis, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_kern_cache_all)
+ ret lr
+SYM_FUNC_END(nop_flush_kern_cache_all)
- .globl nop_flush_user_cache_all
- .equ nop_flush_user_cache_all, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_user_cache_all)
+ ret lr
+SYM_FUNC_END(nop_flush_user_cache_all)
- .globl nop_flush_user_cache_range
- .equ nop_flush_user_cache_range, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_user_cache_range)
+ ret lr
+SYM_FUNC_END(nop_flush_user_cache_range)
- .globl nop_coherent_kern_range
- .equ nop_coherent_kern_range, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_coherent_kern_range)
+ ret lr
+SYM_FUNC_END(nop_coherent_kern_range)
-ENTRY(nop_coherent_user_range)
+SYM_TYPED_FUNC_START(nop_coherent_user_range)
mov r0, 0
ret lr
-ENDPROC(nop_coherent_user_range)
-
- .globl nop_flush_kern_dcache_area
- .equ nop_flush_kern_dcache_area, nop_flush_icache_all
+SYM_FUNC_END(nop_coherent_user_range)
- .globl nop_dma_flush_range
- .equ nop_dma_flush_range, nop_flush_icache_all
-
- .globl nop_dma_map_area
- .equ nop_dma_map_area, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_flush_kern_dcache_area)
+ ret lr
+SYM_FUNC_END(nop_flush_kern_dcache_area)
- .globl nop_dma_unmap_area
- .equ nop_dma_unmap_area, nop_flush_icache_all
+SYM_TYPED_FUNC_START(nop_dma_flush_range)
+ ret lr
+SYM_FUNC_END(nop_dma_flush_range)
- __INITDATA
+SYM_TYPED_FUNC_START(nop_dma_map_area)
+ ret lr
+SYM_FUNC_END(nop_dma_map_area)
- @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
- define_cache_functions nop
+SYM_TYPED_FUNC_START(nop_dma_unmap_area)
+ ret lr
+SYM_FUNC_END(nop_dma_unmap_area)